[NSRCA-discussion] control horns

[vicenterc at comcast.net]

Thanks Scott,

OK.  We are in the same page.

Vicente "Vince" Bortone


-------------- Original message -------------- 
From: "Scott Smith" <js.smith at verizon.net> 

Servo arm is 7mm, control horn is 36mm from the hinge (top hinged Brio, small 3412SA servo!)  ATV's are 112% and 115% to give +- 21 degrees.  Dual rates are dialed down to +- 15 degrees.
-----Original Message-----
From: vicenterc at comcast.net [mailto:vicenterc at comcast.net]
Sent: Friday, November 03, 2006 5:43 PM
To: NSRCA Mailing List; NSRCA Mailing List
Cc: Scott Smith
Subject: Re: [NSRCA-discussion] control horns


Question or comment:

In the picture I see that you use long servo arm.  Looks like the ratio in your linkage is very close to 1:1.  I could be wrong because the angle in the picture.  In my pattern planes, I usually finish with a ratio of 1:3.  That means that if the horn (distance to the hinge line) is 1.5 inches, I use 1/2 inch servo arm.  Usually the servo arms that come in the servo works well for me.  One time I tried to set up with a ratio one to one and the plane was practically unflyable for precision.  I use for elevator high rate (spins) about 20 degrees having the radio rate set 150% (60 degree of servo movement is converted to 20 degrees in the control surface).  I use the flying modes to reduce the throws for normal fly to get around 8-10 degrees (around 65% in the flying mode).

What is your experience in this regard?

Vicente "Vince" Bortone  
-------------- Original message -------------- 
From: "Scott Smith" <js.smith at verizon.net> 

I've used 3/32 aircraft ply laminated with CF epoxied into a 1/8" slot.  Shape as needed to get it over the hinge line.


  -----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of JShulman
Sent: Friday, November 03, 2006 5:03 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] control horns


cause that was back on the Jekyll and the wing was only 3/4" thick. It was easy to get it centered on the hinge line. I think the new wing thickness is double that so I might need a bit more reach forward.

Regards,
Jason
www.jasonshulman.com
www.shulmanaviation.com
www.composite-arf.com 
-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Rick Kent
Sent: Friday, November 03, 2006 4:45 PM
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] control horns


If a bolt and aileron horn works well, why change it?

Rick 

-------Original Message-------

From: JShulman
Date: 11/03/06 16:35:14
To: NSRCA
Subject: [NSRCA-discussion] control horns

Hi all,

What are you guys using for control horns on your planes? Last things I used
were a 6/32 bolt and "aileron horns" with a clevis. Is that still the way to
do it or is there something better. Not interested in the MK BB stuff, too
"good" for me.

Thanks,
Jason
www.jasonshulman.com
www.shulmanaviation.com
www.composite-arf.com


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